J307 Voltage Measurements - Agilent Technologies 6611C Service Manual

J307 Voltage Measurements

Cable W9 connects J307 of the A1 Main Board Assembly to J207 of the A2 Interface Assembly. Table 3-4
provides a quick method of determining if the voltages between these assemblies are within the normal
range. If any of these voltages is outside the normal range, refer to the flowcharts to further troubleshoot the
circuit associated with the abnormal voltage.
Table 3-4. Voltage Measurements at J207 (A2 Interface to A1 Main board)
A1J207 Signal Name
Pin #
1 PM_INHIBIT (Enabled)
2 OV_SCR*
3 OV_PROG
4 FAN_PROG
5 OV_DETECT*
6 SW_POS (Norm)
7 RANGE_SELECT (High)
8 OS_TRIM_NEG (COMP)
OS_TRIM_NEG (SCPI)
9 +5Vs
10 COMMON
11 COMMON
12 +15Vs
13 -15Vs
14 HS_THERM (@25C)
15 FUSE
16 IMON_H
17 IMON_L
IMON_L (@20mA Out)
18 IMON_P
19 VMON
20 COMMON
21 COMMON
22 COMMON
23 COMMON
24 CV_PROG
25 CC_PROG
26 CC_DETECT*
27 CCN_DETECT*
28 CV_DETECT*
CV Mode
Full Scale Voltage
No Load
0
+5
+3.9
+2.8
+5
+5
0
+1.7
+4.0
+5
0
0
+15
-15
+2.5
+2.4
0
0
+4.8
0
+4.8
0
0
0
0
-4.8
-4.8
+5
+5
0
Troubleshooting - 3
CC Mode
Full Scale Voltage
Full Load
0
+5
+3.9
+3.8
+5
+5
0
+1.7
+4.0
+5
0
0
+15
-15
+2.5
+2.6
+3.5
+14.7
+4.8
0
+4.8
0
0
0
0
-4.8
-4.8
0
+5
+5
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